Consolidated Balance Sheet Detail - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Mar. 31, 2015
Property Plant And Equipment [Line Items]
Total property and equipment	$ 53,761	$ 33,100
Less: accumulated depreciation	(4,817)	(3,367)
Total property and equipment, net	48,944	29,733
Land [Member]
Property Plant And Equipment [Line Items]
Total property and equipment	1,525
Plant and Machinery [Member]
Property Plant And Equipment [Line Items]
Total property and equipment	35,886	21,688
Leasehold Improvements [Member]
Property Plant And Equipment [Line Items]
Total property and equipment	$ 16,350	$ 11,412